CVE-1999-0923: Sample runnable code snippets in ColdFusion Server 4.0 allow remote attackers to read files, conduct a denial

This month

HIGH 7.5DOWNGRADE

CVE-1999-0923 is a high-severity flaw (CVSS 7.5) affecting coldfusion server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sample runnable code snippets in ColdFusion Server 4.0 allow remote attackers to read files, conduct a denial of service, or use the server as a proxy for other HTTP calls.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2001-03-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: allaire

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2001-03-12 05:00 UTCPublished CVE record published
2026-06-16 21:49 UTCUpdated Record last modified

allaire coldfusion server DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy coldfusion-server || rpm -q coldfusion-server || coldfusion-server --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison coldfusion-server sudo apt install coldfusion-server=<VERSION_BEFORE_4.0> sudo apt-mark hold coldfusion-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list coldfusion-server sudo dnf downgrade coldfusion-server-<VERSION_BEFORE_4.0> sudo dnf versionlock add coldfusion-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-1999-0923?

coldfusion server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-1999-0923 being exploited?

CVE-1999-0923 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-1999-0923 affect?

CVE-1999-0923 affects coldfusion server. Severity is high (CVSS 7.5). Sample runnable code snippets in ColdFusion Server 4.0 allow remote attackers to read files, conduct a denial of service, or use the server as a proxy for other HTTP calls.

How urgent is CVE-1999-0923?

Priority 44/100. High severity

Software pages

Adobe ColdFusion vulnerabilities

Related CVEs

CVE-2002-0576 MEDIUM 5.0 DOWNGRADE ColdFusion 5.0 and earlier on Windows systems allows remote attackers to determine the absolute pathname of .c
CVE-2001-1120 MEDIUM 6.4 DOWNGRADE Vulnerabilities in ColdFusion 2.0 through 4.5.1 SP 2 allow remote attackers to (1) read or delete arbitrary fi
CVE-2001-0535 HIGH 7.5 DOWNGRADE Example applications (Exampleapps) in ColdFusion Server 4.x do not properly restrict prevent access from outsi
CVE-2000-0538 MEDIUM 5.0 DOWNGRADE ColdFusion Administrator for ColdFusion 4.5.1 and earlier allows remote attackers to cause a denial of service
CVE-2000-0410 MEDIUM 5.0 DOWNGRADE ColdFusion Server 4.5.1 allows remote attackers to cause a denial of service by making repeated requests to a

References

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